class_docstr: High-level description of data present in this DataFrame.
  
  This is a custom data accessor.
code: def __init__(self, data):
      self._data = data
      self._desc = {}
  
file_path: pyjanitor/janitor/accessors/data_description.py
imports: from typing import Dict, List, Union
  import pandas
  import pandas_flavor
label_desc: Use image node_id 1 to create a new DataDescription object  with example: obj = DataDescription(data)